When a crooked sheriff murders his employer, William "Billy the Kid" Bonney decides to avenge the death by killing the man responsible, throwing the lives of everyone around him into turmoil, and endangering the General Amnesty set up by Governor Wallace to bring peace to the New Mexico Territory.
| Camera | J. Peverell Marley | Director of Photography |
| Sound | Alexander Courage | Original Music Composer |
| Writing | Gore Vidal | Theatre Play |
| Directing | Arthur Penn | Director |
| Editing | Folmar Blangsted | Editor |
| Writing | Leslie Stevens | Screenplay |
| Production | Fred Coe | Producer |
| Camera | Harry Davis | Camera Operator |
| Sound | Earl Crain Sr. | Sound |
| Directing | Russell Saunders | Assistant Director |
| Costume & Make-Up | Gordon Bau | Makeup Supervisor |
| Costume & Make-Up | Marjorie Best | Costume Design |
| Art | William L. Kuehl | Set Decoration |
| Art | Art Loel | Art Direction |
| Crew | Jack Williams | Stunts |
| Crew | Boyd 'Red' Morgan | Stunts |
| Crew | Paul Baxley | Stunts |
